5.AsyncHttp、post
httpClient
// 网络访问请求 new Thread(new Runnable() { @Override public void run() { String url = "http://192.168.1.101:8080/ChatServer/register"; // 创建 httpClient HttpClient client = new DefaultHttpClient(); // 创建 post请求 HttpPost post = new HttpPost(url); List<NameValuePair> pairs = new ArrayList<NameValuePair>(); // 配置请求头 // post.addHeader("", ""); // 配置请求参数 pairs.add(new BasicNameValuePair("account", account)); pairs.add(new BasicNameValuePair("password", password)); try { post.setEntity(new UrlEncodedFormEntity(pairs)); HttpResponse response = client.execute(post); int statusCode = response.getStatusLine().getStatusCode(); if (statusCode == 200) { // 拿到网络的返回结果 final String result = EntityUtils.toString(response .OgetEntity()); Log.d("result : ", "" + result); // 需要在主线线程中做UI操作 getActivity().runOnUiThread(new Runnable() { @Override public void run() { doResult(result); } }); } } catch (Exception e) { e.printStackTrace(); } } }).start();
AsyncHttp
// 创建 访问端 AsyncHttpClient client = new AsyncHttpClient(); // 接口地址 String url = "http://192.168.1.101:8080/ChatServer/register"; // RequestParams params = new RequestParams(); params.put("account", account); params.put("password", password); // 调用post方法访问网络 client.post(context, url, params, new TextHttpResponseHandler() { @Override public void onSuccess(int statusCode, Header[] headers, String responseString) { Log.d("success", responseString + ""); JsonParser parser = new JsonParser(); JsonElement element = parser.parse(responseString); JsonObject root = element.getAsJsonObject(); JsonPrimitive flagJson = root.getAsJsonPrimitive("flag"); boolean flag = flagJson.getAsBoolean(); if (flag) { JsonObject dataObject = root.getAsJsonObject("data"); if (dataObject != null) { Account user = new Gson().fromJson(dataObject, Account.class); Log.d("", user.toString()); } } else { JsonPrimitive errorCodeJson = root .getAsJsonPrimitive("errorCode"); JsonPrimitive errorStringJson = root .getAsJsonPrimitive("errorString"); Log.d("", errorCodeJson.getAsInt() + " : " + errorStringJson.getAsString()); } } @Override public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) { Log.d("error", responseString + " : " + throwable.getMessage()); } });
由于不需要每个页面访问网络都去写这一段代码，抽取：
回调接口：
public abstract class ObjectCallback<T> { private final Class<T> clazz; @SuppressWarnings("unchecked") public ObjectCallback() { ParameterizedType type = (ParameterizedType) this.getClass() .getGenericSuperclass(); clazz = (Class<T>) type.getActualTypeArguments()[0];//获取泛型 } public Class<T> getDataClass() { return clazz; } public abstract void onSuccess(T data); public abstract void onFailure(int errorCode, String errorString);}
HMChatManager
public class HMChatManager { private static HMChatManager instance; private Context context; public static HMChatManager getInstance(Context context) { if (instance == null) { synchronized (HMChatManager.class) { if (instance == null) { instance = new HMChatManager(context); } } } return instance; } private HMChatManager(Context context) { this.context = context; } @SuppressWarnings("rawtypes") public HttpFuture sendRequest(String url, final ObjectCallback callback) { return sendRequest(url, null, callback); } @SuppressWarnings("rawtypes") public HttpFuture sendRequest(String url, Map<String, String> headers, Map<String, String> paramters, final ObjectCallback callback) { // 创建 访问端 AsyncHttpClient client = new AsyncHttpClient(); // 请求消息头 if (headers != null) { for (Map.Entry<String, String> me : headers.entrySet()) { client.addHeader(me.getKey(), me.getValue()); } } // 请求参数 RequestParams params = new RequestParams(); // params.put("account", account); // params.put("password", password); if (paramters != null) { for (Map.Entry<String, String> me : paramters.entrySet()) { params.put(me.getKey(), me.getValue()); } } // 调用post方法访问网络 RequestHandle handle = client.post(context, url, params, new TextHttpResponseHandler() { @SuppressWarnings("unchecked") @Override public void onSuccess(int statusCode, Header[] headers, String responseString) { Log.d("success", responseString + ""); JsonParser parser = new JsonParser(); JsonElement element = parser.parse(responseString); JsonObject root = element.getAsJsonObject(); JsonPrimitive flagJson = root .getAsJsonPrimitive("flag"); boolean flag = flagJson.getAsBoolean(); if (flag) { JsonObject dataObject = root .getAsJsonObject("data"); if (dataObject != null) { if (callback != null) { @SuppressWarnings("unchecked") Object obj = new Gson().fromJson( dataObject, callback.getDataClass()); callback.onSuccess(obj); } } } else { JsonPrimitive errorCodeJson = root .getAsJsonPrimitive("errorCode"); JsonPrimitive errorStringJson = root .getAsJsonPrimitive("errorString"); Log.d("", errorCodeJson.getAsInt() + " : " + errorStringJson.getAsString()); if (callback != null) { callback.onFailure(errorCodeJson.getAsInt(), errorStringJson.getAsString()); } } } @Override public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) { Log.d("error", responseString + " : " + throwable.getMessage()); if (callback != null) { callback.onFailure(HMError.ERROR_SERVER, "服务器连接问题"); } } }); return new HttpFuture(handle); }
访问的的时候
String url = "http://192.168.1.101:8080/ChatServer/register"; Map<String, String> paramters = new HashMap<String, String>(); paramters.put("account", account); paramters.put("password", password); future = HMChatManager.getInstance(getActivity()).sendRequest(url, paramters, new ObjectCallback<Account>() { @Override public void onSuccess(Account data) { Log.d("onSuccess", data.toString()); // 数据的存储 AccountDao dao = new AccountDao(getActivity()); data.setCurrent(true); Account localAccount = dao.getByAccount(data .getAccount()); if (localAccount != null) { dao.updateAccount(data); } else { dao.addAccount(data); } // 页面跳转 ((LoginActivity) getActivity()).go2FillInfo(); } @Override public void onFailure(int errorCode, String errorString) { Log.d("onFailure", errorCode + " : " + errorString); switch (errorCode) { case HMError.ERROR_CLIENT_NET: Log.d(TAG, "客户端网络异常"); ToastUtil.show(getActivity(), "客户端网络异常"); break; case HMError.ERROR_SERVER: Log.d(TAG, "服务器异常"); ToastUtil.show(getActivity(), "服务器异常"); break; case HMError.Register.ACCOUNT_EXIST: Log.d(TAG, "用户已经存在"); ToastUtil.show(getActivity(), "用户已经存在"); break; default: break; } } });
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